I tried bonding layers of closed cell foam to diy. Not a patch It’s a great product, I’ve modified some wide tweezers to grab & pull layers; filing the edge so It grips well. Also, a modified razor blade, sharpening the sides also & using a small pliers to hold whilst levelling a layer. Trying to design a tool for it tbh. I had a few questions, Shadowfoam answered promptly. On my 5th pack now, everything now has a place, also, I know it’s missing. Tip! Buy loads of scalpel blades #11 not expensive, keep changing them often. For small items such as screwdriver bits etc, heat an old one , holding in mole grips & melt the tiny holes.